package com.esyoga.yoyoga.service;

import com.esyoga.yoyoga.pojo.TStudent;

import java.math.BigDecimal;

public interface StudentService {

    /**
     * 增加或减少学员余额
     * @param money:增加或减少的金额。正数为增加，负数为减少
     * @return
     */
    public String updateStudentBalance(BigDecimal money, Integer sId);
}
